Novel formulations of CKM matrix renormalization

Details Novel formulations of CKM matrix renormalization Novel formulations of CKM matrix renormalization

2009-06-15

arxiv.org/abs/0906.2670v1

AIP Conf.Proc.1182:327-330,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure, talk presented by A. Sirlin at CIPANP 2009: Tenth Conference on the Intersections of Particle and Nuclear P

Scientific paper

10.1063/1.3293809

We review two recently proposed on-shell schemes for the renormalization of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix in the Standard Model. One first constructs gauge-independent mass counterterm matrices for the up- and down-type quarks complying with the hermiticity of the complete mass matrices. Diagonalization of the latter then leads to explicit expressions for the CKM counterterm matrix, which are gauge independent, preserve unitarity, and lead to renormalized amplitudes that are non-singular in the limit in which any two quarks become mass degenerate. One of the schemes also automatically satisfies flavor democracy.

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